Valve-gear.



Patented 1an. l, Ism.'

No. 664,9m.

F. SCHOENEBERGER.

VALVE GEAR.

(Application tiled Oct. 21. 1891.)

2 Sheets-Shut (No Model.)

YH: foams #51ans co. PuofoLm-xa. wAsmNnToN. n. c.

Patented Jan. l, rem.

nu. 664,9ol.

AF. scneenaasan.

VAHE GEAR. (inlined oct. s1, mm'

2 Sheets-Shea! 2.

(lo Model.)

THE cams PETERS au. Fumo-uma; wAsNwm'oN. n. c.

UNTTE STATES PATENT OEEICE.

FRANZ SOHOENEBERGER, OF KAISERSLAUTERN, GERMANY.

VALVE-G EAR.

SPECIFICATION forming part of Letters Patent No. 664,901, dated January 1, 1901.

Application filed October Z1, 1897. Serial No. 655,987. (No model.)

T0 @ZZ whom, it 71u07/ concern:

Be it known that LFRANZ SCHOENEBERGER, mechanical engineer,of Kaiserslautermin the Kingdom of Bavaria, Germany, have invented new and useful Improvements in Valve- Gear, (for which I have obtained Letters Patent in England, provisional patent applied for September 9, 1897; in France, Additional Patent No. 257,651, dated March 6, 1897, and in Germany, Patent Sch. 12,328 l/ll, applied for February 18, 1897,) of which the following is a specification.

This invention relates to valve-gear for fluid-pressure engines, which is simple in construction, reliable, and easily regulated, as will appear from the following description, wherein reference is had to the accompanying drawings, in which- Figure 1 represents in side view a directacting pumping-engine provided with valvegear constructed in accordance with my invention. Fig. 2 is an end View of the same. Fig. 3 is a plan view of the same. Fig. 4 is a vertical section of the steam-valve box, with plan of the lower end of the slide-valve, which is shown in its up position. Fig. 5 is a side view of the valve-box, with half-plan of its cover. Fig. 6 isavertical section of the valve-box, with the slide-valve in its down position. Fig. 7 is a section of the steam-valve box, taken on a plane at right angles to that of Fig. 4. Fig. 8 is a side elevation of the npper part of the slide-valve. Fig. 9 is a plan View of the same. Fig. 1() is a transverse sectional view of the slide-valve and valve-box. Fig. 11 corresponds to Fig. 9, with the valve shown in a diierent position. Fig. 12 is a similar view to Fig. 9, the valve being shown, however, in a different position. Fig. 13 corresponds to Fig. 10, except that the parts are shown in different positions. Figs. 14 and 16 are vertical sectional views of the valve for the pump. Figs. 15 and 17 are like views of the same, the section being taken on a plane at right angles to that represented in Figs. 14 and 16. Fig. 18 is a plan of the steam-cyliu der and tappets. Fig. 19 shows sections ofthe engine and pump-valve boxes indicating the connection of the slide-valves.

The working fluid, which may be steam, water under pressure, or compressed air, enters the valve-box B through the inlet e and thence passes by the passages c and ct to the opposite ends, respectively, of the cylinder, Figs. 1 and 18.

In the valve-box B is fitted to slide a pistonvalve O, which operates as follows: The piston-valve C being in its high position, as shown in Fig. il, fluid entering at the inlet e lows through the passage l), Fig. 7, to the channel d in the valve C and presses the Valve C down to its lowermost position, as indicated in Figs. 6 and 7. In the narrow part of the piston-valve C are slitsf and f', which according as the piston is down or up make connection with the inlet e to the passages ct a', leading respectively to the two ends of the cylinder. Thus when the slide is down, Figs. 6 and 7, fluid passes Jfrom the inlet e through the slit fand the passage ct to the right-hand end of the cylinder. The slit f' at this time forms a connection between the passage ct' at the left-hand end of the cylinder and interior recess in the slide-valve and the exhaust fluid escapes through the passage a, the slit f', and the recess g.

In order that the lluid under the pistonvalve C may escape when the piston descends, a slit e is provided in the piston, which slit forms a means of communication between the recess g and the outlet-passage b.

As the piston ot the cylinder A moves to the left a tappet 7c on a rod s t, which is connected to and moves with the piston, strikes the arm h,which is xed on the piston-valve C, thereby causing the valve to be turned to the position shown in Figs. land 10. The channel CZ is then brought into register with the inlet e, so that the uid flowing through the passage b and into the channel d will move the piston up into the position shown in Fig. 4, so that by the slits f2 and]03 the exhaust passes from the right end of the cylinder through the passages c and f3 to the recess g, while fluid passes to the left end of the cylinder by the passages f2 and a'. As the piston of the cylinder A then makes its stroke to the right the tappet lo' acts on the arm h, thereby turning the slide-valve partly around, and thus reversing the distribution of the Working f'luid. By a level' H, one arm of which is attached to the rod of the slide-valve C and the other to the slide-valve T of the pump, this slide-valve T is moved up and down, so that IOO slits in it, as shown in Figs. 14 to 17 and in Fig. 19, Will alternate the passage of fluid to and from the ends of the pump-cylinder.

The operation of the valve T is as follows: As soon as the lever H assumes the position indicated in dotted lines in Fig. 1 the valve is lifted, as shown in Fig. 16, thus allowing steam to pass to the right of the piston-head (see Fig. 15) and to force it from right to left. When the lever H is in the position indicated in full lines in Fig. 1 of the drawings, the valve T assumes the posit-ion shown in Fig. 14, in which (see Fig. 17) the steam can pass to the left of the pump-piston and force it from left to right.

Now what l claim, and desire to secure by Letters Patent, is-

1. In a device of the character described, the combination of a cylinder, a port near each end of said cylinder, a piston working therein, means for supplying fluid to said ports, a piston-valve controlling the passage of uid to said ports, a rod xed to and moving with said valve and means connected to the rod of the piston Jfor automatically and intermittently turning said rod of the pistonvalve in opposite directions to permit an' axial motion to be transmitted to sa'id valve, whereby the fluid is admitted iirst to one side and then the other of the piston-head in the cylinder.

2. In a device of the character described, the combination of a cylinder, a port near each end of said cylinder, a piston Working therein, means for supplying fluid to said ports, a piston-valve contmlling,r the passage of fluid to said ports, a rod fixed to and moving with said valve and having an arm thereon, said valve having a central exhaust passage or opening contained therein, tappets carried by the rod of the piston and adapted to cooperate with the arm on the valve-rod for automatically and intermittenti)7 turning said piston-valve to permit an axial motion to be transmitted thereto, whereby when iinid is admitted to one side of the piston-head it will be exhausted from the other side thereof through said exhaust-passage in the valve.

3. In a device of the character described, the combination of a cylinder, a port near each end of said cylinder, a piston Working therein, means for supplying iiuid to said ports, a piston-valve controlling the passage of fluid to said ports, a rod fixed t0 and moving with said valve, a pump-valve, connections between said piston-valve and pump-V valve for automatically operating the latter by a reciprocation of the former, and means for automatically and intermittently turning said piston-valve to permit axial motion to be transmitted thereto, whereby duid isadl mitted first to one side and then to the other 

